/* ============================================================
   SYNESENSE — synesense.magen7a.com
   Static marketing site. Tokens from the app (tokens.css).
   Display: Syne · Mono: Space Mono · Body: Inter
   ============================================================ */

:root {
  --obsidian: #07070A;
  --obsidian-2: #0E0E14;
  --obsidian-3: #15151E;
  --magenta: #FF2BD6;
  --cyan: #1FE0FF;
  --grad: linear-gradient(135deg, var(--magenta), var(--cyan));
  --text-hi: #F4F4FA;
  --text-mid: #A8A8BE;
  --text-lo: #5A5A70;
  --glass-bg: rgba(20, 20, 30, 0.55);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-blur: 22px;
  --radius: 16px;
  --font-display: "Syne", "Inter", sans-serif;
  --font-mono: "Space Mono", "Courier New", monospace;
  --font-body: "Inter", system-ui, sans-serif;
  --maxw: 1180px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--obsidian);
  color: var(--text-hi);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
b { font-weight: 600; }

.grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 6rem 1.5rem 0; }
.section > .section-label, .section > .section-title, .section > .section-sub {
  max-width: var(--maxw); margin-left: auto; margin-right: auto;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 1rem;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 4.6vw, 3.4rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
}

.section-sub { color: var(--text-mid); font-size: 1.05rem; margin: 0 0 2.75rem; max-width: 42rem; }

/* ---------- nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1.5rem;
  background: rgba(7, 7, 10, 0.82);
  backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
}

.brand { display: flex; align-items: center; gap: 0.6rem; font-family: var(--font-display); font-weight: 800; letter-spacing: 0.02em; }

.brand-mark {
  width: 26px; height: 26px; border-radius: 8px;
  background: var(--obsidian-3);
  border: 1px solid var(--glass-border);
  display: inline-flex; align-items: center; justify-content: center;
}
.brand-mark i {
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--grad);
  box-shadow: 0 0 14px rgba(255, 43, 214, 0.55);
}

.nav-links { display: flex; align-items: center; gap: 1.6rem; }
.nav-links a { font-size: 0.9rem; color: var(--text-mid); transition: color 0.2s ease; }
.nav-links a:hover { color: var(--text-hi); }
.nav-links a.nav-cta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: #fff;
  background: var(--grad);
  padding: 0.5rem 1.1rem;
  border-radius: 999px;
}
.nav-links a.nav-cta:hover { transform: translateY(-1px); }

/* ---------- hero ---------- */

.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 5.5rem 1.5rem 4rem;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3.5rem;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--text-mid);
  margin: 0 0 1.4rem;
}
.eyebrow-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--grad);
  box-shadow: 0 0 10px var(--magenta);
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.8rem, 6.6vw, 5rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
  margin: 0 0 1.5rem;
}

.hero .lede { color: var(--text-mid); font-size: 1.1rem; max-width: 33rem; margin: 0 0 2.2rem; }

.cta-row { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-bottom: 2.4rem; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.98rem;
  padding: 0.85rem 1.6rem;
  border-radius: 12px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.btn:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 6px 26px -8px rgba(255, 43, 214, 0.65); }
.btn-primary:hover { transform: translateY(-2px); }
.btn-arrow { width: 15px; height: 15px; }

.hero-meta { list-style: none; display: flex; flex-wrap: wrap; gap: 1.8rem; margin: 0; padding: 0; font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.05em; color: var(--text-mid); }
.hero-meta li { display: flex; flex-direction: column; gap: 0.15rem; }
.meta-k { color: var(--text-lo); font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase; }

.hero-visual {
  border-radius: 22px;
  padding: 10px;
  background: linear-gradient(160deg, rgba(255,43,214,0.16), rgba(31,224,255,0.10) 55%, rgba(255,255,255,0.04));
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 24px 70px -22px rgba(0, 0, 0, 0.85), 0 0 60px -18px rgba(255, 43, 214, 0.4);
}
.hero-visual svg { display: block; width: 100%; height: auto; border-radius: 14px; }

/* ---------- feature cards ---------- */

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; }

.card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(140%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 1.5rem 1.4rem 1.4rem;
  transition: transform 0.22s ease, border-color 0.22s ease;
}
.card:hover { transform: translateY(-4px); border-color: rgba(255, 43, 214, 0.35); }

.card h3 { font-family: var(--font-display); font-weight: 700; font-size: 1.18rem; letter-spacing: -0.01em; margin: 0 0 0.5rem; }
.card p { color: var(--text-mid); font-size: 0.94rem; margin: 0; }

/* ---------- rule band ---------- */

.rule-band {
  margin-top: 6rem;
  padding: 5rem 1.5rem;
  background:
    radial-gradient(40rem 18rem at 50% 0%, rgba(31, 224, 255, 0.08), transparent 65%),
    linear-gradient(180deg, rgba(14, 14, 20, 0.9), var(--obsidian-2));
  border-top: 1px solid var(--glass-border);
  border-bottom: 1px solid var(--glass-border);
}
.rule-inner { max-width: var(--maxw); margin: 0 auto; text-align: center; }
.section-label-light { color: var(--magenta); }
.rule-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 4.6vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 1.2rem;
}
.rule-sub { color: var(--text-mid); max-width: 46rem; margin: 0 auto; font-size: 1.05rem; }

/* ---------- models ---------- */

.model-stack { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; margin-bottom: 2.4rem; }

.model-card {
  position: relative;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(140%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 1.6rem 1.5rem;
  overflow: hidden;
  transition: transform 0.22s ease, border-color 0.22s ease;
}
.model-card:hover { transform: translateY(-4px); border-color: rgba(31, 224, 255, 0.35); }

.model-id { font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: 0.2em; color: var(--text-lo); display: block; margin-bottom: 0.9rem; }
.model-card h3 { font-family: var(--font-display); font-weight: 700; font-size: 1.2rem; margin: 0 0 0.5rem; }
.model-card p { color: var(--text-mid); font-size: 0.94rem; margin: 0; }

.stack-chips { list-style: none; display: flex; flex-wrap: wrap; gap: 0.7rem; padding: 0; margin: 0; }
.stack-chips li {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--text-mid);
  border: 1px solid var(--glass-border);
  background: rgba(14, 14, 20, 0.7);
  border-radius: 8px;
  padding: 0.5rem 0.95rem;
}

/* ---------- download ---------- */

.dl-card {
  max-width: var(--maxw);
  margin: 0 auto;
  background:
    radial-gradient(36rem 20rem at 85% 50%, rgba(255, 43, 214, 0.13), transparent 60%),
    radial-gradient(28rem 18rem at 5% 110%, rgba(31, 224, 255, 0.11), transparent 60%),
    var(--obsidian-2);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 3.2rem;
}
.dl-copy { max-width: 40rem; }

.dl-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 4.4vw, 3.2rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
}
.dl-sub { color: var(--text-mid); max-width: 30rem; margin: 0 0 2rem; }
.btn-lg { padding: 1rem 2rem; font-size: 1.05rem; }
.dl-foot { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.08em; color: var(--text-lo); margin: 1.3rem 0 0; }

/* ---------- footer ---------- */

.footer {
  margin-top: 6rem;
  border-top: 1px solid var(--glass-border);
  background: rgba(7, 7, 10, 0.6);
  padding: 2.6rem 1.5rem 2.2rem;
}
.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.4rem;
}
.footer-brand { display: flex; flex-direction: column; gap: 0.4rem; }
.footer-brand .brand-name { font-family: var(--font-display); font-weight: 800; font-size: 1.05rem; }
.footer-brand p { color: var(--text-mid); font-size: 0.85rem; margin: 0; }
.footer-links { display: flex; gap: 1.6rem; }
.footer-links a { color: var(--text-mid); font-size: 0.88rem; transition: color 0.2s ease; }
.footer-links a:hover { color: var(--cyan); }
.footer-legal { width: 100%; color: var(--text-lo); font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.06em; margin: 1rem 0 0; }

/* ---------- responsive ---------- */

@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; gap: 2.6rem; padding-top: 3.6rem; }
  .grid-3, .model-stack { grid-template-columns: repeat(2, 1fr); }
  .dl-card { padding: 2.4rem 1.8rem; }
}

@media (max-width: 640px) {
  .nav-links a:not(.nav-cta) { display: none; }
  .grid-3, .model-stack { grid-template-columns: 1fr; }
  .section { padding: 4rem 1rem 0; }
  .hero { padding: 3rem 1rem 3rem; }
  .rule-band { padding: 4rem 1rem; }
}

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}